There's a wonderful new product made for just what you describe...My Holistic Vet found them last year at a convention....He recommends them at his practice for various reasons: You might want to check it out.....
Two of my dogs wear them and we LOVE them......Both are disk disease dogs and their legs slip on our floors, too!
Here's the link: http://www.toegrips.com/
Karla
What type of surface is he on when his rear legs slip out from under him? Our dog is old and doesn't do well on our hardwood floors, her rear legs slip, especially when getting up.. We have to put throw rugs on the wood floor on the path she usually takes from one room to another, seems to help.
Welcome.....Did your Vet offer any Anti-inflammatory Medication for your Bichon when it was limping? Did it help?
This could be Simple age related Arthritis made worse by the winter cold.....Ask your Vet for a prescription (If you don't already have one)and start him on a good Joint supplement.....This may be all he needs and would be worth trying..........Let us know, Karla